Internal-combustion engine.



lss'r AVAILABLE COP- UNITED fsTATEs PATENT oEEIoE.

. oHnntEs J.A WEeEn, or omzVELANn,V omo, AssIGNoE To THE WEGEE MOTOR COMPANY,

0E CLEVELAND, oHIo, AA CORPORATION 0E omo. f

racen-.11'.

Application and April as, 1914, serial Nol 833,882. Renewed Eebmaryvaa, 191e. seri'aiNo. erase.

To all whom it may concern Be it known that I, CHARLES J. VVEGEL, a citizen of the United, States, resident of Cleveland, countyof Cuyahoga and State of Ohio, have invented a new and useful .improvement in Internal-Combustion Engilles, of which the following is a specification, the principle of theinvention being eral object of theinventiorr'being to increase v the efficiency of this class ot enginesand .particularly to develop a maximum horsepower from a. cylinder of a given diameter, one of the features of my invention contrihuting to such object being toA complete scavenging of the gases of combustion generated inthe Cylinders.

The said rinvention consists o`f means hereinafter fully describedand particularly set forthin the claims.

y This application subject-matter of application, Serial No. 65223-18, originally. -filed October 4, 1911, hy the applicant.

T he annexed drawing and the following description set forth in detail certain mechanism embodying my invention, the disclosed `means, however, constituting but one of Various forms in which the principle of the S5 invention may he applied.

In. said annexeddrawing:v Figure 1 represents a vertical axial section of a twocycle engine elnbodying my invention, taken upon the plane indicated by line II, Fig. 40,52-, and Fig. 2 is same taken upon. the plane indicated by line Il--IL Fig. 1. i in the device illustrated, the main oroperating cylinder. AI. is provided with the usual exhaust port n., the water space e forming a water-jacket, the piston A', 'connectinnrod o2, crank n and crank-shaft f1.4, the'latter being' provided withrtho fiy wheel A2. The crank-shaft is' mounted Vin suitable hearing'sli Y# formed in the housing' B of the engine: EFThe headjaf' ot the cylinder is provided with a centrally-iocated valve-opening across whichis formed a spider a?, Fig. 2.

1' This spider is bored to' receive the valve-stern Fp 5 5 @which carries uponv -its lower extremity vthe INTERNAL-COMBUSTION ENGINE,

Specioation of Letters Patent.

terior of cylinder furthermore forms the a vertical axial section ot' puppet-valve c which controls saidgopening and which opens inwardly withrespect to the cylinder A. The said valve is'kept normally closed hymea'ns of a helical spring c2 introduced between the spider and the nut J3 secured to the upper .end of the stem, -as-will I be understood. Y

'Superimpvosed on the cylinder A is a second' cylinder C with whose interior the in,- A communicates through the medium of the valve-opening aP. The interior of cylinder (l furthermore. communicates at its lower end with a carburetor l), such conimunication being controlled by a. check-valve c, Fig. 2, which opens Ainwardly with respect to such interior, and is kept normally closed by means of a helical spring '"introduced between the housingstructure and a nut c2 secured tothel outer end of the stein e of said valve. The piston C operates in this llatter cylinder andi's provided with a connecting rod c4 whose up perend is connected with a crank c5 formed on a crank-shaft o, which is mounted in suitable bearings L /lformed iii the upperpart of the 'frame or housing'of the machine. The upper and lower parts of the housing, which provide supports for the crankshafts,v are separable from the outer ends of the cylinders respectively, to which they are secured by suitable bolts, as will be understood. the joint between the lower hous ing" and the lower end of the lower cylinder being made gas-tight in the usual manner. The dividing wall `between the two cylinders forms a common inner head for the two` cylinders. The outer ends ofthe .crank-shaftso" and o are provided with cranks a, o? anda. and 'os respectively. which are connected with each other by means. of sido rods A3 and A* respectively, as shown. Cranks n? and as are placed so as tooccupy positions rela'- tively to each other such'as .will form angles of 90 degrees. "for thepurpose ot overcoming a possible dead-center. as will be readily understood.v @ranks a and c are so a1'- rauged with reference tofeach other thatthe pistons and C ivill. during their operation approach and recede yfrom cach other. The arrangement oi thosecranks is further such that they will iorin angles of different degli-ces at any-given instant, with reference to a giyen plane, suchas a plane` p erpendicular to the.l common axisotthe cy1m ders, whereby the piston C will be caused to operate sllghtly irl-:advance of piston A, that is, it will reachv its lowermost posltion in its stroke at a time somewhat in advance cylinder C is made somewhat greaterthan lfied.

space necessary that of cylinder A so as to give piston' C a greater displacement than piston A', as shown, and for a purpose hereinafter speci- Cylinder C is of a length such as to allow piston C" to reach a point much nearer the common cylinder head than does the -piston A', the upper end of the stroke of the latter being such as to provide the usual toV form an' explosionchamber. I

The above described device operates` as follows: Assuming the parts to be in the positions shown in Figs. 1 and 2, and the upper end of the interior of the cylinder A to be filled with compressed hydrocarbon mixture, the rotation of the crank-.shafts will cause the piston C to move upwardly, pisv ton A also moving upwardly and approaching the extreme upper portion of its stroke. The mixture in the cylinder A will therefore be still further slightly compressed, valve e remaining closed. Immediately after the piston A has reached such upper end of the kroke, ignition takes place and -thecommessed mixture explodes, thcrebydriving the said piston downwardly in the cylinder, piston C continuing in its upward movement. The action of the piston C during its upward movement causes an influx of the hydrocarbon mixture into the bottom of cylinder C, the valve e opening'as a result thereof, as will be understood. During the downward travel of the piston .A it uncovers the exhaust port a, thereby permitting the major portion of the gases of combustion to be discharged therethrough. Before the piston A reaches the lowermostend ofthe stroke, piston C will have reached the uppermost portion of its stroke and will begin its return movement while the exhaust port a is still open, while the piston A is reaching the lowermost end of its stroke and during a part of the time that such lat- `ter piston is on its return stroke. The in- Y terior of cylinder C will meanwhile have .roo

been completely' filled with the hydrocarbon mixture and the valve o will have remained closed during the above-described operation. The return movement of the piston lC will therefore cause the mixture in cylinder Cto op'en the valve c andthereupon force such mixture into the cylinder A. This operation takes place during a time 'in whiclrthe exvhaust port a is open, and the mixture dewing into the cylinder A drives .before it any Iremaining gases of combustion present in such cylinder, and out through the exhaust .duces a much hi ort a, thus'completely scavenging this cylinder. IThe further upward 4movement', 0f-

piston A, closes port a, but pistonlC continues to'force the mixture into the cylinder A and compresses same therein, iston A assisting in this compression- T e piston C', however, being slightly' in4 advance of piston A', the pressure 1n cylinder C exceeds that in cylinder A'and the valve c` remains open to permit of the free` passage'of the compressed mixture into cylinder A.' Immediately afterthe piston C,begins its upward stroke, the pressure in the cylinder A .will exceed that in cylinder C, and the valve cf'will close, thereby arranging theparts again for the explosion and causing,y them to assume the positiondescribed li n the beginning of the operation and as shown 'in sary to -open the valve c throu hout the inward strokeof piston Cl is the Y y always assured. By making the displacement'of piston' C yexceed that of the ypistn A it 'will `be seen that alarger amount of -mixture maybe drawn from thecarbureter for the same length of stroke of` pistonC as that to which rpiston A 4kis subJ'ected.'y A greater amou t of'mixture is therefore compressed intothe space above iston A than could be introduced therein y means `of the 4said piston A alone. Such'y amount y-inay be further augmented if desired by increasing the length of cylinder C and increasing the throw of the cranks. It will therefore be seen that, as 'compared' with theqnlinary construction of 'two cycle engines,-a `greater pressure may be reduced in Vthe explosion chamber of cylin er A as a result of oompressing a greater amount of mixtureinto said chamber, or the said Aspace may-be enlarged so thata'greater amount of ymixture may be compressed therein at a resul-e substantially equal to that ordinanl ob lined. In either case the combustionv oft e g 1R) her pressure onthe n than can be pr uced in the ordinary oonstruction heretofore used, and a greater horsepower for a given cylinders diameter and stroke of piston is thereby obtained.

Having fully described luy-invention, what I-lclaim therefore-and 'desire to secure b stent :s zn 1. n n an internaleombudion engine,J the combination Yof` the wo Iand pirdon, a'portion of the interior of laid cylinder forming a iiringchamber; ignitionmeans communicating .with 'the latter; a separate .cylinder communicating with the acume of supgly ci the explosive mixture;

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piston said latter cylinder; 'avalve vfor controlling communication between said two cylinders; a valve for controllin vcommunication between said separate cylin erand said source'of supply; two crank-shafts-and connecting-rod's' connecting said pistons with said shafts respectively; andme'ansconnecting said crank-shafts whereby .a definite and predetermined relationship l"fofthe piston movements is obtained, said-connecting rodsand crank-shafts being set vso a's to, allow the lpistons to move in .opposite directions throughout a part of their respective strokes;

- said firstnamed valve `being arranged to cut off communication between Athe two cylinders at the time of the explosion of the mixture in the firing chamber.

- Q. In an internal combustion engine, the

combination of a woi'king-cylinder and pis-V ton, a part of the interior of' said cylinder forming a firlng-chamber; ignition-means communicating with the latter; a vseparate cylinder of greater diameter than said working-cylinder, and communicating with thef source of supply of the explosive 'mixturey a piston in the latter cylinder; a valve'for ture in said firing-chamber.

3. In an internal combustion engine, -the combination of the working-cylinder and piston, a; part of said cylinder forming a tiring-chau'ibcr; ignition means communicating with the latter; a .separate cylinder com-l inunicatingwth the source of supply of the explosive mixture; a piston in said latter cylinder; a valve for controlling communication between said two. cylinders; a valve for controlling coiuniunication between said separate cylinder and said source, ol" supply crank-shafts mounted adjacent tothe outer ends of said two cylinders respectively; conmeeting-rods connecting said pistons -with said crank-shafts respectively; each of said crank-shafts being provided with two "additional cranks; and two additional connecting-rods having their oppositeA ends conncctedfwitli one of said additional cranks on each of said crank-shafts.

4. In an internal combustion engine` the combination of the worldng-cylinder andy piston; a separate compression-cylinder and pistou, therefor communicating therewith;

.h vajlve 'opening inwardly with respect to said working-.cylinder and controlling such communication, said valve arranged to depend for its operation. upon the pressure of the gases'in 'such cylinders; said compression-cylinder communicating with a sourceI of supply of explosive mixture; an auto-` matically-operating valve for controlling such'last named communication and opening inwardlyy with respect to such compression-cylinder; two crank-shafts suitably 'itiV mounted; two connecting-rods mounted upon i the cranks on said crank-shafts' andconnected respectively with the said pistons; said shafts beingx arranged 'to reciprocate said pistons in op osite directions throughout apart onl ci) their' respective strokes;

said crank-sha ts beingprovided with addii ,ing inwardly with respect to said workingcilindei and controlling such.v communicaL tion; said compression-cylind ex` communicat-- ing with a source of'supply .ofqexplosve named comn'iunication: two crankeshafts suitably mounted; tuoconnecting-rods connecting such crank-shafts with said 'pistons respectively; said two shafts being arranged sons to reciprocate said pistons in opposite ing inwardly with respect to coinpresf simi-cylinder and controlling "such lest"I mixture; ai spring-'held puppetvalveopenitc directions throughout a part only oftheir respective strokes; each such crank-shaft being provided with two additional cranks; connecting-rods Veach connecting one such additional crank of one of said shafts to a similar cranlz'of the other shaft; the additional cranks of eachshatt being angnlarly related to each other.

(l. lii an internal combustion engine, the combination of a working-cylinder and piston of the two-cycle type; an inclosing housing .secured to the outer end of such cylinder; a. compression-cylinder and piston, said two cylinders being placed end to end and having a. common dividing wall forming a common head for such cylinders: a passageway- Vin said bead; a spring-held puppetvalve opening inwardly with respect to said working-cylinder and adapted to be actuated by the compression of the gases in such cylinders; said @impression-cylinder cornnuuncating with a source of explosive mixture; a spring-held puppet-valve controlling v such last named'communication and opening inwardly with respectto such compresiis sion-cylinder; an inclosing housing mounted upon the outer end of said compressionlcylinder; crankLshafts mounted in said two housings respectively; connecting-rods con- 'Qlnecting saidcrank-shafts and pistons rej' Bpectivelyg Said crank-shafts each being prov"vided with; two additional cranks angularly yielted to Acach other, the angular relation 'f of one set of such cranks be' identical with n.fthat of the other-of such sets; and connecting-rods one additionalV crunk f oney shaft to the corresponding.ndditonal crankof the othr lhgft l 1 Sligneld by me this- 2N day of April,A 91 j c l `'muzLlgzs .LVWIBVGEBk .Atstedbyg "g Hmmm Emu,

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